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Today, many companies have come up with some brilliant ideas to use public spaces. This Swedish Barncancer Foundation is not an exception, they found an original idea about a digital subway video ad for hair-care products. The sign showed a woman’s hair blowing in the wind whenever a train passes by. The foundation got this idea and made their own version. The result is incredible. Just watch to find out.

Please don’t forget to SHARE this amazing video with everyone you know.